C# android Xamarin中的Dynamic ImageView 100%宽度

我正在与Xamarin和Visual studio合作。我想从REST服务在我的应用程序上动态添加ImageView

我的Main.axml如下所示：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/linearLayout1"
    android:minWidth="25px"
    android:minHeight="25px">
    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <LinearLayout
            android:orientation="vertical"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/linearOnlineOffers" />
    </ScrollView>
</LinearLayout>

    protected override void OnCreate(Bundle bundle)
    {
        base.OnCreate(bundle);

        // Set our view from the "main" layout resource
        SetContentView(Resource.Layout.Main);

        string url = "http://192.168.90.102/test_api/handler.php/";

        Online[] onlines = CallRestService(url);
        LinearLayout layoutBase = FindViewById<LinearLayout>(Resource.Id.linearOnlineOffers);

        foreach (Online online in onlines)
        {
            ImageView img = new ImageView(this);
            img.LayoutParameters = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MatchParent, ViewGroup.LayoutParams.MatchParent);
            img.Visibility = ViewStates.Visible;
            layoutBase.AddView(img);
            Koush.UrlImageViewHelper.SetUrlDrawable(img, online.picture_filename);
        }
    }

我的MainActivity.cs如下所示：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/linearLayout1"
    android:minWidth="25px"
    android:minHeight="25px">
    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <LinearLayout
            android:orientation="vertical"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/linearOnlineOffers" />
    </ScrollView>
</LinearLayout>

    protected override void OnCreate(Bundle bundle)
    {
        base.OnCreate(bundle);

        // Set our view from the "main" layout resource
        SetContentView(Resource.Layout.Main);

        string url = "http://192.168.90.102/test_api/handler.php/";

        Online[] onlines = CallRestService(url);
        LinearLayout layoutBase = FindViewById<LinearLayout>(Resource.Id.linearOnlineOffers);

        foreach (Online online in onlines)
        {
            ImageView img = new ImageView(this);
            img.LayoutParameters = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MatchParent, ViewGroup.LayoutParams.MatchParent);
            img.Visibility = ViewStates.Visible;
            layoutBase.AddView(img);
            Koush.UrlImageViewHelper.SetUrlDrawable(img, online.picture_filename);
        }
    }

protectedoverride void OnCreate（捆绑包）
{
base.OnCreate（bundle）；
//从“主”布局资源设置视图
SetContentView（Resource.Layout.Main）；
字符串url=”http://192.168.90.102/test_api/handler.php/";
Online[]onlines=CallRestService（url）；
LinearLayout layoutBase=FindViewById（Resource.Id.linearOnlineOffers）；
foreach（在线中的在线）
{
ImageView img=新的ImageView（本）；
img.LayoutParameters=新的LinearLayout.LayoutParams（ViewGroup.LayoutParams.MatchParent，ViewGroup.LayoutParams.MatchParent）；
img.Visibility=ViewStates.Visible；
layoutBase.AddView（img）；
Koush.urlmageviewHelper.SetUrlDrawable（img，online.picture\u文件名）；
}
}

我试图使ImageView位于屏幕的整个宽度上。不幸的是，它看起来像这样：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/linearLayout1"
    android:minWidth="25px"
    android:minHeight="25px">
    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <LinearLayout
            android:orientation="vertical"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/linearOnlineOffers" />
    </ScrollView>
</LinearLayout>

    protected override void OnCreate(Bundle bundle)
    {
        base.OnCreate(bundle);

        // Set our view from the "main" layout resource
        SetContentView(Resource.Layout.Main);

        string url = "http://192.168.90.102/test_api/handler.php/";

        Online[] onlines = CallRestService(url);
        LinearLayout layoutBase = FindViewById<LinearLayout>(Resource.Id.linearOnlineOffers);

        foreach (Online online in onlines)
        {
            ImageView img = new ImageView(this);
            img.LayoutParameters = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MatchParent, ViewGroup.LayoutParams.MatchParent);
            img.Visibility = ViewStates.Visible;
            layoutBase.AddView(img);
            Koush.UrlImageViewHelper.SetUrlDrawable(img, online.picture_filename);
        }
    }

要使图像100%显示在屏幕上，我应该更改什么

---

谢谢大家!

我必须添加以下代码行：

img.SetScaleType(ImageView.ScaleType.CenterCrop);

因此，最终代码如下所示：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/linearLayout1"
    android:minWidth="25px"
    android:minHeight="25px">
    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <LinearLayout
            android:orientation="vertical"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/linearOnlineOffers" />
    </ScrollView>
</LinearLayout>

    protected override void OnCreate(Bundle bundle)
    {
        base.OnCreate(bundle);

        // Set our view from the "main" layout resource
        SetContentView(Resource.Layout.Main);

        string url = "http://192.168.90.102/test_api/handler.php/";

        Online[] onlines = CallRestService(url);
        LinearLayout layoutBase = FindViewById<LinearLayout>(Resource.Id.linearOnlineOffers);

        foreach (Online online in onlines)
        {
            ImageView img = new ImageView(this);
            img.LayoutParameters = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MatchParent, ViewGroup.LayoutParams.MatchParent);
            img.Visibility = ViewStates.Visible;
            layoutBase.AddView(img);
            Koush.UrlImageViewHelper.SetUrlDrawable(img, online.picture_filename);
        }
    }

创建时受保护的覆盖无效（捆绑包） { base.OnCreate（bundle）

//从“主”布局资源设置视图
SetContentView（Resource.Layout.Main）；
字符串url=”http://192.168.90.102/test_api/handler.php/";
Online[]onlines=CallRestService（url）；
LinearLayout layoutBase=FindViewById（Resource.Id.linearOnlineOffers）；
foreach（在线中的在线）
{
ImageView img=新的ImageView（本）；
img.LayoutParameters=新的LinearLayout.LayoutParams（ViewGroup.LayoutParams.MatchParent，ViewGroup.LayoutParams.MatchParent）；
img.SetScaleType（ImageView.ScaleType.CenterCrop）；
img.Visibility=ViewStates.Visible；
layoutBase.AddView（img）；
Koush.urlmageviewHelper.SetUrlDrawable（img，online.picture\u文件名）；
}
}